Healthy weight gain can be as challenging as healthy weight loss. Although being lean can often be healthy, being underweight can be a concern if it's the result of poor nutrition or a medical condition.
Body weight doesn't tell much about health and fitness status. A crucial part of determining how much one should weigh has to do with what makes up that weight - a healthy ratio of muscle, bone, and fat.
The words "Weight Management" can mean different things to different people. For people who are underweight, it would mean increasing their weight to that which would be ideal for their height and age.
Healthy eating is not about strict nutrition philosophies, staying unrealistically thin, or depriving yourself of the foods you love. Rather, it's about feeling great, having more energy, and keeping yourself as healthy as possible.